This is a free Twitter for business webcast by: Sarah Milstein from O’Reilly that covers the following tips for using Twitter:

• Best practices for micro-messaging in business
• Pitfalls to avoid in this instant, very public medium
• New methods for customer service and quick market research
• How micro-messaging can help you reduce email and eliminate unproductive meetings

There is also USD $295 transcript of this webcast at O’Reilly, which is kind of expensive since the webcast is free.